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Study finds NYC Clean Air Taxi rules successful in cutting pollution

Green Car Congress

New York City Clean Air Taxi rules are successful in cutting emissions and reducing air pollution, [link] to a new study by researchers at the Columbia University Mailman School of Public Health and Drexel University. The scientists report that overall fuel efficiency of the medallion taxi fleet climbed from 15.7 Treat, Kimberly R.

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Study suggests high-mileage light-duty fleets contribute higher emissions and emissions share than expected

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One segment of the on-road fleet that is believed to drive more miles and consume more fuel than the average fleet vehicle is livery (for-hire) vehicles, such as taxis and limousines. They used remote vehicle exhaust sensors to collect emissions measurements, and recorded a video image of the license plate of each vehicle.

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Swiss team finds particle emissions from aircraft turbine engines at ground-idle induce oxidative stress in bronchial cells

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In a study on the effect of exhaust particles from aircraft turbine engines on human lung cells, Swiss researchers have found that cells reacted most strongly to particles emitted during ground idling. The study also showed that the cytotoxic effect is only to some extent comparable to that of particles from gasoline and diesel engines.

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KCL study finds London air pollution from traffic improving, but continues to exceed limits in many parts of city

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Overall, there was a decrease in total traffic between 2005 and 2014, mainly explained by the reduction in cars and taxis. Fitting new exhaust clean-up technology to older buses helped to curb nitrogen dioxide along some of London’s roads. However, despite the reduced traffic, levels of roadside pollutants did not decrease accordingly.

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Study of emissions from CNG- and gasoline-fueled autorickshaws suggests measurements and data, not assumptions, should drive policy

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By 2003, all buses, taxis and auto-rickshaws in Delhi were retrofitted to run on CNG; only new vehicles with CNG engines are now available. (Of In Delhi, there are more than 55,000 CNG auto-rickshaws for hire, providing flexible mobility that is faster and more reliable than city buses while costing less than conventional taxis.

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NYSERDA awards $4.6M to 17 transportation projects; support for Syracuse U supercritical diesel injection project

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(Rochester), with Blue Lake Associates (Rochester) are working on a device that could reduce pollution from a diesel engine by generating an ionic field to oxidize particulate matter in the exhaust, breaking down complex pollutants and making engines more environmentally friendly. NYSERDA funding: $270,000. NYSERDA funding: $260,000.

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EPA Issues Advance Notice of Proposed Rulemaking on Lead Emissions from Leaded Aviation Gasoline, Seeks Public Comment

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Aviation gasoline is utilized in general aviation aircraft with piston engines—which are generally used for instructional flying, air taxi activities, and personal transportation. A fraction of lead is retained in the engine, engine oil and/or exhaust system, which EPA currently estimates at 5%. grams per liter or 2.12

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